Results 21 to 30 of about 1,321 (169)

Functional Divergence of Glycoprotein Hormone Receptors [PDF]

open access: yes, 2010
Two lamprey glycroprotein hormone receptors (lGpH-R I and II) highly similar with gnathostome GpH-Rs were cloned from sea lamprey testes and thyroid, respectively.
Freamat, Mihael, Sower, Stacia A.
core   +3 more sources

Hypothalamic-Pituitary-Gonadal Endocrine System in the Hagfish

open access: yesFrontiers in Endocrinology, 2013
The hypothalamic-pituitary system is considered to be a seminal event that emerged prior to or during the differentiation of the ancestral agnathans (jawless vertebrates).
Masumi eNozaki
doaj   +1 more source

The Spinobulbar System in Lamprey [PDF]

open access: yes, 2007
Locomotor networks in the spinal cord are controlled by descending systems which in turn receive feedback signals from ascending systems about the state of the locomotor networks.
Buchanan, James T., Einum, James F
core   +2 more sources

Cloning and Characterization of Mannose-Binding Lectin from Lamprey (Agnathans) [PDF]

open access: yesThe Journal of Immunology, 2006
AbstractThe recognition of pathogens is mediated by a set of pattern recognition molecules that recognize conserved pathogen-associated molecular patterns shared by broad classes of microorganisms. Mannose-binding lectin (MBL) is one of the pattern recognition molecules and activates complement in association with MBL-associated serine protease (MASP ...
Momoe, Takahashi   +6 more
openaire   +2 more sources

Dissecting early regulatory relationships in the lamprey neural crest gene network [PDF]

open access: yes, 2008
The neural crest, a multipotent embryonic cell type, originates at the border between neural and nonneural ectoderm. After neural tube closure, these cells undergo an epithelial–mesenchymal transition, migrate to precise, often distant locations, and ...
Basch   +22 more
core   +3 more sources

The unique fossil assemblage from the Lode Quarry (Upper Devonian, Latvia) [PDF]

open access: yesFossil Record, 2001
The unique fossil fauna from the Lode clay quarry, lower Frasnian, Latvia, includes a diverse ichthyofauna of at least 15 taxa of agnathans and gnathostomes, representing most of the major taxa of Devonian vertebrates. Six new fish taxa (five species and
I. Upeniece
doaj   +5 more sources

Ancient evolutionary origin of vertebrate enteric neurons from trunk-derived neural crest [PDF]

open access: yes, 2017
The enteric nervous system of jawed vertebrates arises primarily from vagal neural crest cells that migrate to the foregut and subsequently colonize and innervate the entire gastrointestinal tract.
A Peters   +30 more
core   +2 more sources

Three foxg1 paralogues in lampreys and gnathostomes—brothers or cousins?

open access: yesFrontiers in Cell and Developmental Biology
Foxg1 is a key regulator of the early development of the vertebrate forebrain and sensory organs. In this study, we describe for the first time three foxg1 paralogues in lamprey, representative of one of two basally diverged lineages of vertebrates—the ...
Galina V. Ermakova   +7 more
doaj   +1 more source

Origin and evolutionary landscape of Nr2f transcription factors across Metazoa.

open access: yesPLoS ONE, 2021
BackgroundNuclear Receptor Subfamily 2 Group F (Nr2f) orphan nuclear hormone transcription factors (TFs) are fundamental regulators of many developmental processes in invertebrates and vertebrates.
Ugo Coppola, Joshua S Waxman
doaj   +1 more source

Hagfish predatory behaviour and slime defence mechanism [PDF]

open access: yes, 2011
Hagfishes (Myxinidae), a family of jawless marine pre-vertebrates, hold a unique evolutionary position, sharing a joint ancestor with the entire vertebrate lineage. They are thought to fulfil primarily the ecological niche of scavengers in the deep ocean.
Zintzen, V.   +5 more
core   +1 more source

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